You're welcome!
I would think KAV would add it's streams to all files in the initialisation process before scanning, i had not thought it would happen during the installation of the program, although there is some logic in that too.
Since you did try to install KAV i highly doubt about a rootkit too.

Hi there
I have the same problem only my ADStreams are 88 bytes long.
If you look at the streams you will notice the MZ.exe is found on allmost
all of the streams and the streams dont show up untill I start having trojan
problems. When my system is clean I only get 1 or 2 streams. WinXP and
MAC operating systems carry those stupid ADS files and MAC is supposed
to have a split file system. So WinXP will have some streams but not that
many at one time. Some worms and trojandroppers will leave file traces
or copies of those streams so they have a hidden way back into your system.
I had a hacker problem untill I closed my ports. Ask Jooske to help you
with System cleaning and the closeing of your ports and your stream
problem will end.